/ˈt͡ʃifro/
OriginDerived from Arabic صِفْر (ṣifr, “zero”). Compare French chiffre and German Chiffre. Doublet of cifero.
- cipher, code ("method for concealing the meaning of text")
Formsĉifron(accusative, singular) · ĉifroj(plural) · ĉifrojn(accusative, plural)
Source: Wiktionary